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Finding the Fourth Proportional to 85,591.42, 128,355.23 and 29,415.62

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Solution

The fourth proportional to 85,591.42, 128,355.23 and 29,415.62 is: 44,112.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,591.42 : 128,355.23 = 29,415.62 : x
  2. Step 2: Convert to fraction form
    85,591.42/128,355.23 = 29,415.62/x
  3. Step 3: Cross multiply
    85,591.42x = 128,355.23 × 29,415.62
  4. Step 4: Simplify right side
    85,591.42x = 3,775,649,065.12
  5. Step 5: Solve for x
    x = 3,775,649,065.12/85,591.42
  6. Step 6: Final answer
    x = 44,112.47

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